./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0270a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0270a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9489431ca2adb8b900cb4d01b5f65fcc773628acd92e39026c8afa0b8e7448c0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:12:53,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:12:53,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:12:53,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:12:53,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:12:53,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:12:53,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:12:53,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:12:53,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:12:53,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:12:53,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:12:53,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:12:53,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:12:53,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:12:53,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:12:53,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:12:53,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:12:53,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:12:53,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:12:53,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:12:53,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:12:53,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:12:53,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:12:53,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:12:53,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:12:53,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:12:53,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:12:53,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:12:53,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:12:53,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:12:53,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:12:53,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:12:53,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:12:53,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:12:53,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:12:53,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:12:53,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:12:53,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:12:53,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:12:53,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:12:53,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:12:53,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:12:53,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:12:53,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:12:53,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:12:53,542 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:12:53,549 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:12:53,549 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:12:53,549 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:12:53,550 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:12:53,550 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:12:53,550 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:12:53,551 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:12:53,551 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:12:53,551 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:12:53,552 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:12:53,552 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:12:53,552 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:12:53,552 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:12:53,552 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:12:53,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:12:53,554 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:12:53,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:12:53,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:12:53,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:12:53,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:12:53,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:12:53,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:12:53,556 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:12:53,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:12:53,557 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:12:53,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:12:53,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:12:53,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:12:53,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:12:53,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:12:53,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:12:53,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:12:53,559 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:12:53,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:12:53,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:12:53,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:12:53,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:12:53,560 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9489431ca2adb8b900cb4d01b5f65fcc773628acd92e39026c8afa0b8e7448c0 [2021-11-20 23:12:53,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:12:53,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:12:53,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:12:53,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:12:53,889 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:12:53,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-newlib/float_req_bl_0270a.c [2021-11-20 23:12:53,960 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/data/498d56fc4/bbf985d26fbc438db515009acf957e7f/FLAG716db2943 [2021-11-20 23:12:54,440 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:12:54,446 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/sv-benchmarks/c/float-newlib/float_req_bl_0270a.c [2021-11-20 23:12:54,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/data/498d56fc4/bbf985d26fbc438db515009acf957e7f/FLAG716db2943 [2021-11-20 23:12:54,786 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/data/498d56fc4/bbf985d26fbc438db515009acf957e7f [2021-11-20 23:12:54,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:12:54,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:12:54,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:12:54,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:12:54,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:12:54,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:54" (1/1) ... [2021-11-20 23:12:54,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3d1e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:54, skipping insertion in model container [2021-11-20 23:12:54,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:54" (1/1) ... [2021-11-20 23:12:54,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:12:54,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:12:55,112 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/sv-benchmarks/c/float-newlib/float_req_bl_0270a.c[4702,4715] [2021-11-20 23:12:55,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:12:55,123 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:12:55,173 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/sv-benchmarks/c/float-newlib/float_req_bl_0270a.c[4702,4715] [2021-11-20 23:12:55,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:12:55,189 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:12:55,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55 WrapperNode [2021-11-20 23:12:55,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:12:55,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:12:55,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:12:55,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:12:55,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2021-11-20 23:12:55,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2021-11-20 23:12:55,253 INFO L137 Inliner]: procedures = 19, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 257 [2021-11-20 23:12:55,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:12:55,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:12:55,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:12:55,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:12:55,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2021-11-20 23:12:55,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2021-11-20 23:12:55,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2021-11-20 23:12:55,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2021-11-20 23:12:55,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2021-11-20 23:12:55,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2021-11-20 23:12:55,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2021-11-20 23:12:55,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:12:55,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:12:55,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:12:55,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:12:55,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (1/1) ... [2021-11-20 23:12:55,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:12:55,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:12:55,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:12:55,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:12:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:12:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:12:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:12:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-20 23:12:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:12:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-20 23:12:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:12:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:12:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:12:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:12:55,548 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:12:55,559 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:12:55,990 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:12:56,088 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:12:56,092 INFO L301 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-20 23:12:56,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:56 BoogieIcfgContainer [2021-11-20 23:12:56,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:12:56,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:12:56,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:12:56,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:12:56,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:12:54" (1/3) ... [2021-11-20 23:12:56,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4588e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:56, skipping insertion in model container [2021-11-20 23:12:56,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:55" (2/3) ... [2021-11-20 23:12:56,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4588e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:12:56, skipping insertion in model container [2021-11-20 23:12:56,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:56" (3/3) ... [2021-11-20 23:12:56,105 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0270a.c [2021-11-20 23:12:56,112 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:12:56,113 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:12:56,177 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:12:56,192 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:12:56,193 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:12:56,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 45 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:56,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:12:56,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:12:56,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:12:56,216 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:12:56,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:12:56,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1760934509, now seen corresponding path program 1 times [2021-11-20 23:12:56,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:12:56,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378169387] [2021-11-20 23:12:56,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:56,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:12:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:12:56,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:12:56,418 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:12:56,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378169387] [2021-11-20 23:12:56,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378169387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:12:56,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:12:56,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:12:56,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454085258] [2021-11-20 23:12:56,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:12:56,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:12:56,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:12:56,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:12:56,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:12:56,457 INFO L87 Difference]: Start difference. First operand has 46 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 45 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:56,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:12:56,514 INFO L93 Difference]: Finished difference Result 91 states and 149 transitions. [2021-11-20 23:12:56,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:12:56,516 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-20 23:12:56,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:12:56,526 INFO L225 Difference]: With dead ends: 91 [2021-11-20 23:12:56,527 INFO L226 Difference]: Without dead ends: 44 [2021-11-20 23:12:56,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:12:56,537 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:12:56,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:12:56,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-20 23:12:56,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-11-20 23:12:56,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2021-11-20 23:12:56,582 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 8 [2021-11-20 23:12:56,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:12:56,583 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2021-11-20 23:12:56,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:12:56,584 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2021-11-20 23:12:56,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 23:12:56,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:12:56,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:12:56,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:12:56,587 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:12:56,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:12:56,589 INFO L85 PathProgramCache]: Analyzing trace with hash -971347180, now seen corresponding path program 1 times [2021-11-20 23:12:56,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:12:56,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122302282] [2021-11-20 23:12:56,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:12:56,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:12:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:12:56,639 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 23:12:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:12:56,683 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-20 23:12:56,683 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 23:12:56,685 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:12:56,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:12:56,691 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 23:12:56,694 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:12:56,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:12:56 BoogieIcfgContainer [2021-11-20 23:12:56,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:12:56,723 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:12:56,723 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:12:56,723 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:12:56,724 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:56" (3/4) ... [2021-11-20 23:12:56,727 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 23:12:56,727 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:12:56,728 INFO L158 Benchmark]: Toolchain (without parser) took 1934.91ms. Allocated memory was 86.0MB in the beginning and 107.0MB in the end (delta: 21.0MB). Free memory was 49.5MB in the beginning and 66.5MB in the end (delta: -17.0MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2021-11-20 23:12:56,729 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 86.0MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:12:56,730 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.58ms. Allocated memory was 86.0MB in the beginning and 107.0MB in the end (delta: 21.0MB). Free memory was 49.3MB in the beginning and 80.0MB in the end (delta: -30.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 23:12:56,730 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.00ms. Allocated memory is still 107.0MB. Free memory was 80.0MB in the beginning and 77.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:12:56,731 INFO L158 Benchmark]: Boogie Preprocessor took 54.71ms. Allocated memory is still 107.0MB. Free memory was 77.5MB in the beginning and 75.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:12:56,731 INFO L158 Benchmark]: RCFGBuilder took 785.82ms. Allocated memory is still 107.0MB. Free memory was 75.4MB in the beginning and 55.3MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-20 23:12:56,732 INFO L158 Benchmark]: TraceAbstraction took 625.61ms. Allocated memory is still 107.0MB. Free memory was 54.8MB in the beginning and 66.9MB in the end (delta: -12.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:12:56,733 INFO L158 Benchmark]: Witness Printer took 4.22ms. Allocated memory is still 107.0MB. Free memory was 66.9MB in the beginning and 66.5MB in the end (delta: 385.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:12:56,736 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 86.0MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.58ms. Allocated memory was 86.0MB in the beginning and 107.0MB in the end (delta: 21.0MB). Free memory was 49.3MB in the beginning and 80.0MB in the end (delta: -30.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.00ms. Allocated memory is still 107.0MB. Free memory was 80.0MB in the beginning and 77.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.71ms. Allocated memory is still 107.0MB. Free memory was 77.5MB in the beginning and 75.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 785.82ms. Allocated memory is still 107.0MB. Free memory was 75.4MB in the beginning and 55.3MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 625.61ms. Allocated memory is still 107.0MB. Free memory was 54.8MB in the beginning and 66.9MB in the end (delta: -12.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.22ms. Allocated memory is still 107.0MB. Free memory was 66.9MB in the beginning and 66.5MB in the end (delta: 385.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 200]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 199, overapproximation of someUnaryDOUBLEoperation at line 113, overapproximation of bitwiseAnd at line 127, overapproximation of someUnaryFLOAToperation at line 111, overapproximation of someBinaryArithmeticFLOAToperation at line 130. Possible FailurePath: [L26] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L109-L117] static const float one_asin = 1.0000000000e+00, huge_asin = 1.000e+30, pio2_hi_asin = 1.57079637050628662109375f, pio2_lo_asin = -4.37113900018624283e-8f, pio4_hi_asin = 0.785398185253143310546875f, pS0_asin = 1.6666667163e-01, pS1_asin = -3.2556581497e-01, pS2_asin = 2.0121252537e-01, pS3_asin = -4.0055535734e-02, pS4_asin = 7.9153501429e-04, pS5_asin = 3.4793309169e-05, qS1_asin = -2.4033949375e+00, qS2_asin = 2.0209457874e+00, qS3_asin = -6.8828397989e-01, qS4_asin = 7.7038154006e-02; [L195] float x = -0.0f; [L196] CALL, EXPR __ieee754_asinf(x) [L120] float t, w, p, q, c, r, s; [L121] __int32_t hx, ix; VAL [\old(x)=1000000000000000000000000000002, huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1000000000000000000000000000002] [L123] ieee_float_shape_type gf_u; [L124] gf_u.value = (x) [L125] EXPR gf_u.word [L125] (hx) = gf_u.word [L127] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000002, huge_asin=1000000000000000000000000000000, hx=0, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1000000000000000000000000000002] [L128] COND TRUE ix == 0x3f800000 [L130] return x * pio2_hi_asin + x * pio2_lo_asin; VAL [\old(x)=1000000000000000000000000000002, huge_asin=1000000000000000000000000000000, hx=0, ix=1065353216, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, tiny_sqrt=1/1000000000000000000000000000000, x=1000000000000000000000000000002] [L196] RET, EXPR __ieee754_asinf(x) [L196] float res = __ieee754_asinf(x); [L199] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, res=1000000000000000000000000000001, res == -0.0f && __signbit_float(res) == 1=0, tiny_sqrt=1/1000000000000000000000000000000, x=1000000000000000000000000000002] [L199] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L200] reach_error() VAL [huge_asin=1000000000000000000000000000000, one_asin=1, one_sqrt=1, pio2_hi_asin=13176795/8388608, pio4_hi_asin=13176795/16777216, pS0_asin=16666667163/100000000000, pS2_asin=20121252537/100000000000, pS4_asin=79153501429/100000000000000, pS5_asin=34793309169/1000000000000000, qS2_asin=10104728937/5000000000, qS4_asin=38519077003/500000000000, res=1000000000000000000000000000001, tiny_sqrt=1/1000000000000000000000000000000, x=1000000000000000000000000000002] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 48 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 23:12:56,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0270a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9489431ca2adb8b900cb4d01b5f65fcc773628acd92e39026c8afa0b8e7448c0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:12:59,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:12:59,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:12:59,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:12:59,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:12:59,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:12:59,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:12:59,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:12:59,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:12:59,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:12:59,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:12:59,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:12:59,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:12:59,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:12:59,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:12:59,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:12:59,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:12:59,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:12:59,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:12:59,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:12:59,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:12:59,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:12:59,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:12:59,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:12:59,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:12:59,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:12:59,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:12:59,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:12:59,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:12:59,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:12:59,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:12:59,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:12:59,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:12:59,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:12:59,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:12:59,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:12:59,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:12:59,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:12:59,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:12:59,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:12:59,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:12:59,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-20 23:12:59,399 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:12:59,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:12:59,400 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:12:59,400 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:12:59,401 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:12:59,401 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:12:59,401 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:12:59,401 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:12:59,403 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:12:59,403 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:12:59,404 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:12:59,404 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:12:59,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:12:59,406 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:12:59,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:12:59,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:12:59,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:12:59,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:12:59,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:12:59,408 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 23:12:59,408 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 23:12:59,408 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:12:59,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:12:59,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:12:59,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:12:59,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:12:59,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 23:12:59,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:12:59,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:12:59,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:12:59,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:12:59,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:12:59,411 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-20 23:12:59,411 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 23:12:59,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:12:59,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:12:59,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:12:59,412 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9489431ca2adb8b900cb4d01b5f65fcc773628acd92e39026c8afa0b8e7448c0 [2021-11-20 23:12:59,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:12:59,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:12:59,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:12:59,809 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:12:59,811 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:12:59,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-newlib/float_req_bl_0270a.c [2021-11-20 23:12:59,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/data/a1ee67e17/cea22f8f8b7d4e66ab11f2ed3acfb87b/FLAG8015ada5a [2021-11-20 23:13:00,593 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:13:00,594 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/sv-benchmarks/c/float-newlib/float_req_bl_0270a.c [2021-11-20 23:13:00,604 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/data/a1ee67e17/cea22f8f8b7d4e66ab11f2ed3acfb87b/FLAG8015ada5a [2021-11-20 23:13:00,622 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/data/a1ee67e17/cea22f8f8b7d4e66ab11f2ed3acfb87b [2021-11-20 23:13:00,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:13:00,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:13:00,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:13:00,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:13:00,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:13:00,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:13:00" (1/1) ... [2021-11-20 23:13:00,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d249416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:00, skipping insertion in model container [2021-11-20 23:13:00,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:13:00" (1/1) ... [2021-11-20 23:13:00,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:13:00,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:13:00,881 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/sv-benchmarks/c/float-newlib/float_req_bl_0270a.c[4702,4715] [2021-11-20 23:13:00,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:13:00,899 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:13:00,964 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/sv-benchmarks/c/float-newlib/float_req_bl_0270a.c[4702,4715] [2021-11-20 23:13:00,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:13:00,985 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:13:00,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:00 WrapperNode [2021-11-20 23:13:00,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:13:00,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:13:00,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:13:00,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:13:00,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:00" (1/1) ... [2021-11-20 23:13:01,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:00" (1/1) ... [2021-11-20 23:13:01,037 INFO L137 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 257 [2021-11-20 23:13:01,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:13:01,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:13:01,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:13:01,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:13:01,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:00" (1/1) ... [2021-11-20 23:13:01,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:00" (1/1) ... [2021-11-20 23:13:01,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:00" (1/1) ... [2021-11-20 23:13:01,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:00" (1/1) ... [2021-11-20 23:13:01,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:00" (1/1) ... [2021-11-20 23:13:01,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:00" (1/1) ... [2021-11-20 23:13:01,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:00" (1/1) ... [2021-11-20 23:13:01,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:13:01,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:13:01,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:13:01,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:13:01,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:00" (1/1) ... [2021-11-20 23:13:01,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:13:01,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:13:01,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:13:01,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:13:01,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:13:01,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 23:13:01,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:13:01,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-20 23:13:01,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 23:13:01,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:13:01,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:13:01,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-20 23:13:01,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 23:13:01,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:13:01,342 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:13:01,343 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:13:13,164 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:13:13,171 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:13:13,171 INFO L301 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-20 23:13:13,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:13 BoogieIcfgContainer [2021-11-20 23:13:13,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:13:13,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:13:13,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:13:13,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:13:13,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:13:00" (1/3) ... [2021-11-20 23:13:13,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15188f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:13, skipping insertion in model container [2021-11-20 23:13:13,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:13:00" (2/3) ... [2021-11-20 23:13:13,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15188f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:13:13, skipping insertion in model container [2021-11-20 23:13:13,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:13" (3/3) ... [2021-11-20 23:13:13,182 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0270a.c [2021-11-20 23:13:13,188 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:13:13,188 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:13:13,251 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:13:13,258 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:13:13,259 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:13:13,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 59 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:13,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-20 23:13:13,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:13,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:13,280 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:13:13,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:13,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1900514974, now seen corresponding path program 1 times [2021-11-20 23:13:13,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:13:13,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196816450] [2021-11-20 23:13:13,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:13,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:13:13,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:13:13,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:13:13,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 23:13:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:13,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 23:13:13,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:13,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:14,045 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:13:14,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196816450] [2021-11-20 23:13:14,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196816450] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:14,046 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:14,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 23:13:14,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902465661] [2021-11-20 23:13:14,048 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:14,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:13:14,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:13:14,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:13:14,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:13:14,083 INFO L87 Difference]: Start difference. First operand has 60 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 59 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:14,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:14,121 INFO L93 Difference]: Finished difference Result 118 states and 192 transitions. [2021-11-20 23:13:14,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:13:14,123 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-20 23:13:14,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:14,137 INFO L225 Difference]: With dead ends: 118 [2021-11-20 23:13:14,137 INFO L226 Difference]: Without dead ends: 57 [2021-11-20 23:13:14,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:13:14,147 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:14,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:13:14,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-20 23:13:14,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-20 23:13:14,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 56 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:14,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 75 transitions. [2021-11-20 23:13:14,208 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 75 transitions. Word has length 9 [2021-11-20 23:13:14,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:14,209 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 75 transitions. [2021-11-20 23:13:14,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:14,209 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 75 transitions. [2021-11-20 23:13:14,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 23:13:14,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:14,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:14,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:13:14,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:13:14,426 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:13:14,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:14,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1487835839, now seen corresponding path program 1 times [2021-11-20 23:13:14,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:13:14,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391613454] [2021-11-20 23:13:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:14,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:13:14,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:13:14,430 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:13:14,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 23:13:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:15,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:13:15,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:15,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:15,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:15,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:13:15,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391613454] [2021-11-20 23:13:15,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391613454] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:15,845 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:15,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 23:13:15,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102934539] [2021-11-20 23:13:15,845 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:15,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:13:15,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:13:15,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:13:15,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:13:15,848 INFO L87 Difference]: Start difference. First operand 57 states and 75 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:19,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:21,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:23,874 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:24,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:24,005 INFO L93 Difference]: Finished difference Result 108 states and 139 transitions. [2021-11-20 23:13:24,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:13:24,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-20 23:13:24,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:24,008 INFO L225 Difference]: With dead ends: 108 [2021-11-20 23:13:24,008 INFO L226 Difference]: Without dead ends: 99 [2021-11-20 23:13:24,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:13:24,010 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 65 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:24,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 654 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 3 Unknown, 13 Unchecked, 8.0s Time] [2021-11-20 23:13:24,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-20 23:13:24,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 57. [2021-11-20 23:13:24,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:24,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2021-11-20 23:13:24,021 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 10 [2021-11-20 23:13:24,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:24,022 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2021-11-20 23:13:24,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:24,022 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2021-11-20 23:13:24,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 23:13:24,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:24,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:24,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:13:24,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:13:24,237 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:13:24,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:24,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1242386432, now seen corresponding path program 1 times [2021-11-20 23:13:24,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:13:24,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624463512] [2021-11-20 23:13:24,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:24,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:13:24,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:13:24,240 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:13:24,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 23:13:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:24,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:13:24,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:25,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:25,606 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:13:25,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624463512] [2021-11-20 23:13:25,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624463512] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:25,607 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:25,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 23:13:25,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665926658] [2021-11-20 23:13:25,608 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:25,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:13:25,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:13:25,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:13:25,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:13:25,609 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:28,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:30,544 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:32,760 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:34,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:36,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 23:13:36,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:36,983 INFO L93 Difference]: Finished difference Result 108 states and 138 transitions. [2021-11-20 23:13:36,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:13:36,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 23:13:36,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:36,986 INFO L225 Difference]: With dead ends: 108 [2021-11-20 23:13:36,986 INFO L226 Difference]: Without dead ends: 99 [2021-11-20 23:13:36,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:13:36,988 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 69 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:36,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 632 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 5 Unknown, 18 Unchecked, 11.2s Time] [2021-11-20 23:13:36,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-20 23:13:36,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 57. [2021-11-20 23:13:36,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 56 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:36,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2021-11-20 23:13:36,999 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 11 [2021-11-20 23:13:36,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:36,999 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2021-11-20 23:13:37,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:37,000 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2021-11-20 23:13:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 23:13:37,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:37,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:37,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:13:37,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:13:37,214 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:13:37,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:37,215 INFO L85 PathProgramCache]: Analyzing trace with hash 601224780, now seen corresponding path program 1 times [2021-11-20 23:13:37,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:13:37,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029434454] [2021-11-20 23:13:37,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:37,216 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:13:37,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:13:37,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:13:37,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 23:13:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:38,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:13:38,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:38,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:38,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:39,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:39,362 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:13:39,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029434454] [2021-11-20 23:13:39,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029434454] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:39,362 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:39,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 23:13:39,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595501822] [2021-11-20 23:13:39,363 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:39,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:13:39,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:13:39,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:13:39,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:13:39,365 INFO L87 Difference]: Start difference. First operand 57 states and 73 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:39,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:39,652 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2021-11-20 23:13:39,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:13:39,654 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 23:13:39,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:39,655 INFO L225 Difference]: With dead ends: 66 [2021-11-20 23:13:39,655 INFO L226 Difference]: Without dead ends: 57 [2021-11-20 23:13:39,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:13:39,656 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 7 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:39,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 371 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2021-11-20 23:13:39,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-20 23:13:39,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-20 23:13:39,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 56 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:39,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2021-11-20 23:13:39,670 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 13 [2021-11-20 23:13:39,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:39,673 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2021-11-20 23:13:39,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:39,673 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2021-11-20 23:13:39,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 23:13:39,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:39,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:39,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:13:39,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:13:39,894 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:13:39,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:39,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1089938183, now seen corresponding path program 1 times [2021-11-20 23:13:39,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:13:39,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616917004] [2021-11-20 23:13:39,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:39,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:13:39,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:13:39,896 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:13:39,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 23:13:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:40,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:13:40,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:40,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:41,087 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:13:41,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616917004] [2021-11-20 23:13:41,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616917004] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:41,087 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:41,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-20 23:13:41,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299258023] [2021-11-20 23:13:41,088 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:41,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:13:41,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:13:41,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:13:41,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:13:41,089 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:41,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:41,781 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2021-11-20 23:13:41,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:13:41,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 23:13:41,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:41,783 INFO L225 Difference]: With dead ends: 69 [2021-11-20 23:13:41,783 INFO L226 Difference]: Without dead ends: 66 [2021-11-20 23:13:41,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:13:41,786 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 157 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:41,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 254 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 23:13:41,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-20 23:13:41,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2021-11-20 23:13:41,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 58 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:41,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2021-11-20 23:13:41,803 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 14 [2021-11-20 23:13:41,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:41,803 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2021-11-20 23:13:41,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:41,804 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2021-11-20 23:13:41,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:13:41,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:41,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:41,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 23:13:42,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:13:42,022 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:13:42,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:42,023 INFO L85 PathProgramCache]: Analyzing trace with hash 980104924, now seen corresponding path program 1 times [2021-11-20 23:13:42,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:13:42,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812464521] [2021-11-20 23:13:42,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:42,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:13:42,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:13:42,024 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:13:42,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 23:13:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:42,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 23:13:42,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:43,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:44,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:44,586 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:13:44,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812464521] [2021-11-20 23:13:44,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812464521] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:44,586 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:44,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-11-20 23:13:44,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914050601] [2021-11-20 23:13:44,587 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:44,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:13:44,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:13:44,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:13:44,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:13:44,588 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:45,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:45,799 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2021-11-20 23:13:45,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 23:13:45,799 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-20 23:13:45,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:45,800 INFO L225 Difference]: With dead ends: 66 [2021-11-20 23:13:45,800 INFO L226 Difference]: Without dead ends: 57 [2021-11-20 23:13:45,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:13:45,802 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 165 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:45,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 510 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 24 Unchecked, 0.4s Time] [2021-11-20 23:13:45,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-20 23:13:45,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-20 23:13:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:45,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2021-11-20 23:13:45,811 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 18 [2021-11-20 23:13:45,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:45,811 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2021-11-20 23:13:45,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:45,812 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2021-11-20 23:13:45,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 23:13:45,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:45,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:45,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-20 23:13:46,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:13:46,014 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:13:46,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:46,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1026077179, now seen corresponding path program 1 times [2021-11-20 23:13:46,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:13:46,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137907084] [2021-11-20 23:13:46,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:46,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:13:46,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:13:46,016 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:13:46,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 23:13:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:47,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:13:47,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:47,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:48,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:48,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:13:48,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137907084] [2021-11-20 23:13:48,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137907084] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:48,508 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:48,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 23:13:48,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316737931] [2021-11-20 23:13:48,509 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:48,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:13:48,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:13:48,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:13:48,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:13:48,510 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:48,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:48,938 INFO L93 Difference]: Finished difference Result 104 states and 131 transitions. [2021-11-20 23:13:48,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:13:48,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-20 23:13:48,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:48,940 INFO L225 Difference]: With dead ends: 104 [2021-11-20 23:13:48,940 INFO L226 Difference]: Without dead ends: 57 [2021-11-20 23:13:48,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:13:48,941 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 68 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:48,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 242 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 8 Unchecked, 0.3s Time] [2021-11-20 23:13:48,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-20 23:13:48,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-20 23:13:48,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 56 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:48,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2021-11-20 23:13:48,949 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 26 [2021-11-20 23:13:48,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:48,949 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2021-11-20 23:13:48,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:48,950 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2021-11-20 23:13:48,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 23:13:48,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:13:48,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:48,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 23:13:49,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:13:49,174 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:13:49,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:13:49,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1298044274, now seen corresponding path program 1 times [2021-11-20 23:13:49,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:13:49,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139002314] [2021-11-20 23:13:49,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:13:49,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:13:49,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:13:49,176 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:13:49,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 23:13:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:13:51,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:13:51,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:13:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:51,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:13:54,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:13:54,412 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:13:54,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139002314] [2021-11-20 23:13:54,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139002314] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:13:54,413 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:13:54,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 23:13:54,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463730890] [2021-11-20 23:13:54,413 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:13:54,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:13:54,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:13:54,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:13:54,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:13:54,414 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:54,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:13:54,482 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2021-11-20 23:13:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:13:54,484 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-20 23:13:54,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:13:54,485 INFO L225 Difference]: With dead ends: 57 [2021-11-20 23:13:54,485 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 23:13:54,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:13:54,486 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:13:54,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 8 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:13:54,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 23:13:54,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 23:13:54,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:54,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 23:13:54,487 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-11-20 23:13:54,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:13:54,488 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 23:13:54,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:13:54,488 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 23:13:54,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 23:13:54,490 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:13:54,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-20 23:13:54,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:13:54,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 23:13:55,376 INFO L854 garLoopResultBuilder]: At program point L184(lines 119 185) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 |ULTIMATE.start___ieee754_asinf_#res#1|) (= |ULTIMATE.start___ieee754_asinf_~x#1| .cse0))) [2021-11-20 23:13:55,377 INFO L858 garLoopResultBuilder]: For program point L135(lines 135 136) no Hoare annotation was computed. [2021-11-20 23:13:55,377 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 23:13:55,377 INFO L858 garLoopResultBuilder]: For program point L87-1(lines 87 91) no Hoare annotation was computed. [2021-11-20 23:13:55,377 INFO L854 garLoopResultBuilder]: At program point L87-2(lines 87 91) the Hoare annotation is: false [2021-11-20 23:13:55,377 INFO L858 garLoopResultBuilder]: For program point L87-3(lines 87 91) no Hoare annotation was computed. [2021-11-20 23:13:55,377 INFO L858 garLoopResultBuilder]: For program point L170(lines 170 174) no Hoare annotation was computed. [2021-11-20 23:13:55,377 INFO L858 garLoopResultBuilder]: For program point L170-1(lines 162 180) no Hoare annotation was computed. [2021-11-20 23:13:55,377 INFO L858 garLoopResultBuilder]: For program point L170-2(lines 170 174) no Hoare annotation was computed. [2021-11-20 23:13:55,377 INFO L861 garLoopResultBuilder]: At program point L204(lines 187 205) the Hoare annotation is: true [2021-11-20 23:13:55,378 INFO L858 garLoopResultBuilder]: For program point L122-1(lines 122 126) no Hoare annotation was computed. [2021-11-20 23:13:55,378 INFO L854 garLoopResultBuilder]: At program point L122-2(lines 122 126) the Hoare annotation is: (and (= ~huge_asin~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= |ULTIMATE.start___ieee754_asinf_~x#1| (fp.neg (_ +zero 8 24))) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_asin~0) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-20 23:13:55,378 INFO L858 garLoopResultBuilder]: For program point L56(lines 56 57) no Hoare annotation was computed. [2021-11-20 23:13:55,378 INFO L858 garLoopResultBuilder]: For program point L122-3(lines 122 126) no Hoare annotation was computed. [2021-11-20 23:13:55,378 INFO L854 garLoopResultBuilder]: At program point L23(lines 14 24) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 |ULTIMATE.start___ieee754_asinf_#res#1|) |ULTIMATE.start_main_#t~short17#1| (= |ULTIMATE.start___signbit_float_#res#1| (_ bv1 32)) (= |ULTIMATE.start___ieee754_asinf_~x#1| .cse0) (= .cse0 |ULTIMATE.start___signbit_float_~x#1|) (= .cse0 (fp ((_ extract 31 31) |ULTIMATE.start___signbit_float_~w~0#1|) ((_ extract 30 23) |ULTIMATE.start___signbit_float_~w~0#1|) ((_ extract 22 0) |ULTIMATE.start___signbit_float_~w~0#1|))) (= |ULTIMATE.start_main_~res~0#1| .cse0))) [2021-11-20 23:13:55,378 INFO L858 garLoopResultBuilder]: For program point L56-2(lines 56 57) no Hoare annotation was computed. [2021-11-20 23:13:55,378 INFO L854 garLoopResultBuilder]: At program point L106(lines 94 107) the Hoare annotation is: false [2021-11-20 23:13:55,378 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-11-20 23:13:55,378 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 23:13:55,379 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 84) no Hoare annotation was computed. [2021-11-20 23:13:55,379 INFO L854 garLoopResultBuilder]: At program point L92(lines 28 93) the Hoare annotation is: false [2021-11-20 23:13:55,379 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2021-11-20 23:13:55,379 INFO L858 garLoopResultBuilder]: For program point L159(lines 159 180) no Hoare annotation was computed. [2021-11-20 23:13:55,379 INFO L858 garLoopResultBuilder]: For program point L159-2(lines 119 185) no Hoare annotation was computed. [2021-11-20 23:13:55,379 INFO L858 garLoopResultBuilder]: For program point L77(lines 77 83) no Hoare annotation was computed. [2021-11-20 23:13:55,380 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 23:13:55,380 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 46) no Hoare annotation was computed. [2021-11-20 23:13:55,380 INFO L858 garLoopResultBuilder]: For program point L128(lines 128 148) no Hoare annotation was computed. [2021-11-20 23:13:55,380 INFO L858 garLoopResultBuilder]: For program point L79(lines 79 82) no Hoare annotation was computed. [2021-11-20 23:13:55,380 INFO L858 garLoopResultBuilder]: For program point L96-1(lines 96 100) no Hoare annotation was computed. [2021-11-20 23:13:55,380 INFO L854 garLoopResultBuilder]: At program point L96-2(lines 96 100) the Hoare annotation is: false [2021-11-20 23:13:55,380 INFO L854 garLoopResultBuilder]: At program point L64-2(lines 64 73) the Hoare annotation is: false [2021-11-20 23:13:55,381 INFO L858 garLoopResultBuilder]: For program point L64-3(lines 28 93) no Hoare annotation was computed. [2021-11-20 23:13:55,381 INFO L858 garLoopResultBuilder]: For program point L131(lines 131 148) no Hoare annotation was computed. [2021-11-20 23:13:55,381 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 23:13:55,381 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 200) no Hoare annotation was computed. [2021-11-20 23:13:55,381 INFO L858 garLoopResultBuilder]: For program point L49(lines 49 53) no Hoare annotation was computed. [2021-11-20 23:13:55,381 INFO L858 garLoopResultBuilder]: For program point L49-2(lines 49 53) no Hoare annotation was computed. [2021-11-20 23:13:55,382 INFO L858 garLoopResultBuilder]: For program point L165-1(lines 165 169) no Hoare annotation was computed. [2021-11-20 23:13:55,382 INFO L854 garLoopResultBuilder]: At program point L165-2(lines 165 169) the Hoare annotation is: false [2021-11-20 23:13:55,382 INFO L858 garLoopResultBuilder]: For program point L66(lines 66 70) no Hoare annotation was computed. [2021-11-20 23:13:55,382 INFO L858 garLoopResultBuilder]: For program point L33-1(lines 33 37) no Hoare annotation was computed. [2021-11-20 23:13:55,382 INFO L858 garLoopResultBuilder]: For program point L66-2(lines 66 70) no Hoare annotation was computed. [2021-11-20 23:13:55,382 INFO L854 garLoopResultBuilder]: At program point L33-2(lines 33 37) the Hoare annotation is: false [2021-11-20 23:13:55,382 INFO L858 garLoopResultBuilder]: For program point L33-3(lines 33 37) no Hoare annotation was computed. [2021-11-20 23:13:55,382 INFO L858 garLoopResultBuilder]: For program point L50-2(lines 50 51) no Hoare annotation was computed. [2021-11-20 23:13:55,382 INFO L858 garLoopResultBuilder]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2021-11-20 23:13:55,382 INFO L854 garLoopResultBuilder]: At program point L50-3(lines 50 51) the Hoare annotation is: false [2021-11-20 23:13:55,383 INFO L854 garLoopResultBuilder]: At program point L17-2(lines 17 21) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 |ULTIMATE.start___ieee754_asinf_#res#1|) |ULTIMATE.start_main_#t~short17#1| (= |ULTIMATE.start___ieee754_asinf_~x#1| .cse0) (= .cse0 |ULTIMATE.start___signbit_float_~x#1|) (= |ULTIMATE.start_main_~res~0#1| .cse0))) [2021-11-20 23:13:55,383 INFO L858 garLoopResultBuilder]: For program point L50-4(lines 50 51) no Hoare annotation was computed. [2021-11-20 23:13:55,383 INFO L858 garLoopResultBuilder]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2021-11-20 23:13:55,383 INFO L858 garLoopResultBuilder]: For program point L199(line 199) no Hoare annotation was computed. [2021-11-20 23:13:55,383 INFO L858 garLoopResultBuilder]: For program point L133(lines 133 148) no Hoare annotation was computed. [2021-11-20 23:13:55,383 INFO L858 garLoopResultBuilder]: For program point L199-2(lines 199 202) no Hoare annotation was computed. [2021-11-20 23:13:55,383 INFO L858 garLoopResultBuilder]: For program point L133-1(lines 133 148) no Hoare annotation was computed. [2021-11-20 23:13:55,383 INFO L858 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-11-20 23:13:55,383 INFO L858 garLoopResultBuilder]: For program point L134(lines 134 147) no Hoare annotation was computed. [2021-11-20 23:13:55,384 INFO L858 garLoopResultBuilder]: For program point L101(lines 101 105) no Hoare annotation was computed. [2021-11-20 23:13:55,384 INFO L858 garLoopResultBuilder]: For program point L101-1(lines 94 107) no Hoare annotation was computed. [2021-11-20 23:13:55,384 INFO L858 garLoopResultBuilder]: For program point L101-2(lines 101 105) no Hoare annotation was computed. [2021-11-20 23:13:55,388 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:13:55,390 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:13:55,405 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 23:13:55,408 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 23:13:55,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:13:55 BoogieIcfgContainer [2021-11-20 23:13:55,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:13:55,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:13:55,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:13:55,413 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:13:55,414 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:13:13" (3/4) ... [2021-11-20 23:13:55,417 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 23:13:55,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-11-20 23:13:55,430 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-20 23:13:55,430 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 23:13:55,431 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 23:13:55,454 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == \result && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) [2021-11-20 23:13:55,455 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == \result && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) [2021-11-20 23:13:55,455 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == \result && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == 1bv32) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && res == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) [2021-11-20 23:13:55,479 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-20 23:13:55,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:13:55,480 INFO L158 Benchmark]: Toolchain (without parser) took 54851.21ms. Allocated memory is still 62.9MB. Free memory was 42.4MB in the beginning and 37.1MB in the end (delta: 5.3MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2021-11-20 23:13:55,480 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 62.9MB. Free memory is still 43.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:13:55,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.44ms. Allocated memory is still 62.9MB. Free memory was 42.2MB in the beginning and 44.8MB in the end (delta: -2.6MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2021-11-20 23:13:55,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.79ms. Allocated memory is still 62.9MB. Free memory was 44.8MB in the beginning and 42.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:13:55,482 INFO L158 Benchmark]: Boogie Preprocessor took 83.78ms. Allocated memory is still 62.9MB. Free memory was 42.3MB in the beginning and 39.9MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 23:13:55,482 INFO L158 Benchmark]: RCFGBuilder took 12050.29ms. Allocated memory is still 62.9MB. Free memory was 39.9MB in the beginning and 42.4MB in the end (delta: -2.5MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2021-11-20 23:13:55,482 INFO L158 Benchmark]: TraceAbstraction took 42237.39ms. Allocated memory is still 62.9MB. Free memory was 41.8MB in the beginning and 42.5MB in the end (delta: -610.8kB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2021-11-20 23:13:55,483 INFO L158 Benchmark]: Witness Printer took 66.31ms. Allocated memory is still 62.9MB. Free memory was 42.5MB in the beginning and 37.1MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 23:13:55,485 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 62.9MB. Free memory is still 43.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.44ms. Allocated memory is still 62.9MB. Free memory was 42.2MB in the beginning and 44.8MB in the end (delta: -2.6MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.79ms. Allocated memory is still 62.9MB. Free memory was 44.8MB in the beginning and 42.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.78ms. Allocated memory is still 62.9MB. Free memory was 42.3MB in the beginning and 39.9MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 12050.29ms. Allocated memory is still 62.9MB. Free memory was 39.9MB in the beginning and 42.4MB in the end (delta: -2.5MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * TraceAbstraction took 42237.39ms. Allocated memory is still 62.9MB. Free memory was 41.8MB in the beginning and 42.5MB in the end (delta: -610.8kB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. * Witness Printer took 66.31ms. Allocated memory is still 62.9MB. Free memory was 42.5MB in the beginning and 37.1MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 200]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 42.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 22.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 547 SdHoareTripleChecker+Valid, 20.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 547 mSDsluCounter, 2749 SdHoareTripleChecker+Invalid, 19.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 75 IncrementalHoareTripleChecker+Unchecked, 2173 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 141 IncrementalHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 576 mSDtfsCounter, 141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 270 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 91 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 18 NumberOfFragments, 89 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 6.6s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 252 ConstructedInterpolants, 25 QuantifiedInterpolants, 1158 SizeOfPredicates, 46 NumberOfNonLiveVariables, 551 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 87]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 96]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 122]: Loop Invariant [2021-11-20 23:13:55,493 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 23:13:55,494 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((huge_asin == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_asin) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 165]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 187]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == \result && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == \result && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == 1bv32) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && res == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == \result && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 94]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-11-20 23:13:55,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc993308-8373-49eb-b577-cb7599d6c8f3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE